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铝及其合金的性能可用加热及随后缓冷或快冷(淬火)的方法改善之,退火使其软化,而淬火则使其硬化和强化。退火冷加工和热处理均可使铝及其合金变硬,但经退火可以降低它们的硬度,以便使材料变得较软而富有延性,易于加工。能热处理强化的铝合金,如H_9,N_2,N_(21),N_3, N_(31),N_4,N_(41),N_5,N_(51),N_6,N_(61),N_(80), BTR_1和BTR_2等只能用冷加工使其硬化,其退火工艺为:加热至
The properties of aluminum and its alloys can be improved by heating followed by a slow cooling or rapid cooling (quenching), which is softened by annealing and hardened and tempered by quenching. Annealing Both cold work and heat treatment can make aluminum and its alloys harden, but annealing can reduce their hardness to make the material softer, ductile and easier to process. The heat treatment can strengthen the aluminum alloy such as H_9, N_2, N_ (21), N_3, N_ (31), N_4, N_41, N_5, N_51, N_6, N_61, N_80, BTR_1 and BTR_2, etc. can only be hardened with cold working, the annealing process is: heated to